// 
//  Copyright (c) 2009, Christoph Heindl
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using System;
using NUnit.Framework;

namespace AcceleratorsTests.NUnitExtensions
{
  
  /// <summary>
  /// Extensions to NUnit not available prior to 2.5
  /// </summary>
  public class Assert
  {
    public delegate void Block();
    
    /// <summary>
    /// Assert that the given block of code throws the presented exception type.
    /// </summary>
    /// <remarks>
    /// NUnit prior to release 2.5 (which is unstable under Mono) does not offer this method.
    /// </remarks>
    public static void Throws(Type exception_type, Block block) {
      try {
        block();
        NUnit.Framework.Assert.Fail(String.Format("Exception of type '{0}' was excepted but nothing was thrown", exception_type.FullName));
      } catch (Exception e) {
        if (e.GetType() != exception_type) {
          NUnit.Framework.Assert.Fail(String.Format("Exception of type '{0}' was excepted but exception of type '{1}' was thrown", exception_type.FullName, e.GetType().FullName));
        }
      }
    }
  }
}
